A small incident causes a young girl, Koto, and her brother A and Un to wander into this world.

They runs into a mysterious monk, get chased around by a tech-obsessed girl, and heartily enjoy their chaotic and colorful new life, while searching for a way home. But meanwhile, out of sight, a certain plan is being set into motionÂ…

In this mysterious city where spirits and humans have been thrown together, the festivities are about to begin!